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Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age in years?
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Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age in years?

User Jenny M
by
7.7k points

1 Answer

0 votes

Answer:4

Explanation:

21=3x+9

12=3x

X=4

User Raji
by
7.9k points
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